孔雀河流域平原区土地利用覆盖变化及生态系统服务价值分析

对孔雀河流域 1973(Mss)、1990(TM)、1999年(ETM)三期遥感影像解译获得的数据,进行了土地利用/覆盖变化及生态系统服务价值分析.结果表明: 1973～1999年,研究区内主要的土地利用/覆盖类型,由草地、林地、盐碱地,转向草地、耕地、盐碱地;耕地、城乡工矿居民用地、草地面积大幅增加,林地、水域、盐碱地面积大幅减少;戈壁、沼泽面积减少幅度相对较小,沙地、裸岩石砾地的面积基本不变;生态系统服务总价值量发生了明显的降低.

An Analysis of Land Use /Cover Changes and Ecosystem Services Value in the Peacock River Basin

By interpreting three remote sense images of the Peacock River Basin(1973 MSS,1990(TM)1999 ETM),basic data about area of the land use/cover type of the basin in the last three periods are extracted.On the basis of these data,this paper carries out analysis on changes of land use/cover type,ecosystem services value land use/cover type of the study area in the Peacock River Basin between 1973 and 1999.Through the analysis,the results shows as follows.(1) In 1973,grassland,woodland,and saline land were the main land use/cover type in the basin.In 1999,grassland,agricultural land,and saline land became the main land use/cover type in the basin.(2) The total tendency of land use/cover change in the study area from 1973 to 1999 was that: the area of agricultural land,residental land,and grassland were increased even more;the area of woodland,water area,saline land were greatly decreased;the area of gobi and swampland was decreased by a small margin;the area of desert and exposed rock land was invariant on the whole.(3)The total ecosystem services value of the study area was decreased clearly in the entire period of study.